For exterior applications, perforations can be performed on CNC routing tables or punch machines such as Turret NCT or CNC. All holes should be separated from each other by ≥ 3/8 inch (9.5mm) of composite material, and the open portion of the entire panel should not exceed 45%.

Perforations should be a minimum distance of ≥ 1/4 inch (6.4mm) from panel face edge. When punching the panels, a single stamp press will produce the best results and the clearance should not exceed more than 3.9mil (0.1mm). If lubricating oils are used, follow the guidelines of the 3rd party perforator and ensure protection of the painted aluminum sheet.